Patient Characteristics
| Characteristic | Parameter | Data |
| Age (y) | 70 (range, 44–85) | |
| Sex | Female | 15/48 (31%) |
| Male | 33/48 (69%) | |
| ECOG | 0 | 20/48 (42%) |
| 1 | 25/48 (52%) | |
| 2 | 3/48 (6%) | |
| Smoking status | Never smoker | 7/48 (15%) |
| Former smoker | 24/48 (50%) | |
| Smoker | 17/48 (35%) | |
| Histology | Squamous | 11/48 (23%) |
| Nonsquamous | 37/48 (77%) | |
| Prior lines of therapy | 1 | 17/48 (35%) |
| 2 | 13/48 (27%) | |
| ≥3 | 18/48 (38%) |
ECOG = Eastern Cooperative Oncology Group performance status.